James b



(NoMoleL') Y J. B. BRAY. MECHANICAL MOVEMENT.

No. 256,633. Patented A111218, 1882.'

WITNESSBS:

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, NITED STATES PATEivrr Orifice@ JAMES B. BRAY, OF VVAVERLY, NEW YORK.

MECHANICAL MVElVlENT.

SPECIFICATION frming' pari) Of Letters Patent NO. 256,633, dated April18, 1882 Application filed January 24, 1882. (No model.) Y

To all whom it may concern Beit known that I, JAMES B. BRAY,of Wa-vverly, in the county of Tioga and State of New York, have invented a newand Improved Mechanical Movement; and I do hereby declare that thefollowing is a full, clear, and ex-V is a similar view-of the sameparts, showing.

the parts in position for loose movement ofthe crank about its shaft.Fig. 3 is a longitudinal section of Fig. 2 through thelincmw. Fig. 4showsa modification of my invention.

My invention relates to a new mechanical movement designed to convert anoscillating movement into a rotary movementin a single direction, andwhich mechanical movement is intended to take the place of aratchetaud-A pawl mechanism.

It consists in providing a rotary shaft with a rigid toothed wheel, thenhanging a vibrating frame utpon the said rotary shaft and arrangingthereon a pinion, which meshes with the main toothed wheel, thenpivoting upon a fixed center on one or both sides of this frame anotherpinion, that also meshes with the main gear-wheel, the parts being soarranged that when the vibrating frame moves in one direction the pinioncarried by it meshes both with the main gear-wheel and the fixed pinionon that side connecting the frame (as a crank) rigidlyT to the maingear-wheel and the rotary shaft, to cause the latter to b e turned bythe former, and then when the frame is moved in the other direction itcauses its movable pinion to pass out of mesh with that vstationarypinion and leaves the rotary shaft and main wheel to rotate freely andindependently of said frame.

The invention also consists in duplicating the fixed pinions on oppositesides of the vibrating frame and providing ast'op for shifting the rangeot' vibration of the swinging frame for permitting the device to operatefor rotate ing the shaft in either direction, all as hereinafter morefully described.

In the drawings, A represents the rotary shaft, which is to be turned,and which carries a gear-wheel, B, fixed rigidly on said shaft betweentwo frame-plates, G C. D is the vibrating or swinging frame hung looselyupon the shaft A as a center, and carrying a pinion, al, which is\arranged to mesh with tue main wheel B'.

VUpon each side of the swinging frame D is a loose pinion, b and b',arranged upon 'iXed bearings in plates C C, and in gear with ,the maingear-wheel. Now, when the swinging frame is moved toward the pinion b itwill be seenthat the swinging pinion a meshes both with the pinion b andthe gear-wheel B and jams all these wheels rigidly together, so that formovement in the direction of the arrow in Fi g. l this swin gin g frameacts like a rigid crank on the shaft to turn it., while for the reversemovement of said frame D its pinion leaves the pinion b and moves freelybackward over the wheel B to take a new position on the same for turningit again. To define thisvbackward movement ot' the swinging frame fromthe pinion b a stop, c, is arranged in a crank arm or handle, E, whicharm is rigidly attached to the frame-plates C C, and which stop is madeadjustable, so as to slide back and allow the swinging frame to beshifted to the other side ofthe same and in a position for engagementwith the other pinion, b. The object of this second pinion b' and theadjustability of this stop is simply for the purpose of reversing thedirectionot'movement of the shaft. Thus when the swinging frame vibratesbetween the stop c and the pinion b, as in Figs. l and 2, it turns theshaftnin one direction 5 and when it vibrates between the stop c and thepinion bitturns the shaft in the opposite direction. I may therefore, inmany applications of the device, use only one pinion, b, and need'notmake the stop c adjustable.

Among the principal uses for which I design my movement is for thedriving-cranks of a velocipede. In this application the plane ot' all ofthe wheels is vertical. The main shaft is the wheel-shaft and the armEis the drivingarm, and when the arm E is moved inthe di- IOO rectionofthe arrow,`Fig.1, the swinging frame is held to pinion b by the strainuntil the swinging frame passes over to the right of the center of theshaft A. rlhen when the strain on arm E is relieved the swinging frameis in a position where it is free to drop away from the pinion b toallow the swinging frame to move freely back over wheel B to takea freshhold. Another application of the device is for ratchetdrills, and whenused for this purpose the plane of the wheels is horizontal. When soused some positive mechanism is required for binding the swinging frameto the shaft or its wheel B with a frictional contact, so as to insurethe throwing out of gear ot' the swinging pinion on the back movement,and forthis purpose a friction-disk, d, is placed between the frame Dand the wheel B.

As a modification of my invention l may use friction-gears instead ofthetoothed wheels B b b a, or in the place of pinion a, I may use a wedge,a', as shown in Fig. '4.

Among the advantages of this device may be mentioned the fact that it isvery positive and quick in its action, and is entirely free from theclicking noise of ratchet-teeth when running.

Having thus described my invention, what I claim as new is- 1. Thecombination, with a rotary shafthaving a rigid wheel thereon, a loosewheel meshing with the said rigid wheel and arranged on a tixed center,of a swinging frame hung vupon the said shaft and having a loose wheelor its equivalent, as described, meshingagainst the said rigid wheel andadapted to jam bctween it and the said wheel on the fixed center, as andfor the purpose described.

2. ,The combination, with a rotary shaft having a rigid toothed wheelthereon, aloose pinion [ixed on a stationary bearing and gearing withsaid rigid wheel, and a swinging frame hung upon the rotary shaft andcarrying a loose pinion also gearing with the rigid wheel and adapted,as described, to jam the same with the relatively fixed pinion, asdescribed.

3. The combination, with the frame-plates C G and the arm E, rigidlyattached thereto, of the rotary shaft A, carrying rigid wheel B, thepinions b b', arranged on fixed centers on opposite sides of theswinging frame and in gear with the wheel B, and the swinging frame D,having a pinion, a., adapted to jam with either ofthe wheels b b torotate the main shaft in either direction, as described.

The above specification of my invention signed by me in the presence oftwo subscrib ing witnesses.

JAMES B. BRAY.

Witnesses:

J. F. SHOEMAKER, EDWD. W. BYRN.

